Improvement in ink-well lids



J. M. MOTT. Ink-Well Lid.

No. 214,175. Patented April 8, 1879.

WITNEEE. E5 Qw N. PETERS. PHQTCI-LITMDGHAPMER WASHINGTON, D C

NITED STATES PATENT FFICE.

JOHN M. MOTT, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN INK-WELL LIDS.

Specification forming part of Letters Patent No. 214, 175, dated April8,1879; application filed December 18, 1878.

To all whom it may concern:

Be it known that I, JOHN M. MOTT, of the city of Chicago, in the countyof Cook and State of Illinois, have invented certain new and usefulImprovements in Ink-Well Lids; and I do hereby declare that thefollowing is afull, clear, and exact description thereof, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon, which form a part of this specification.

My invention relates to a novel construction in the lid of an ink-Wellfor school-desks or other situations; and consist-s in the combinationof two disks, centrally riveted to each other, so that one can berotated upon the other, the under disk being adapted to fasten to orover the well, and both provided with holes for the admission of thepen, which holes, by the rotation of one disk upon the other, are madeto coincide or not, as desired.

It also consists in an arrangement of the stops limiting the rotation ofthe upper disk with reference to the fastening device of the lower one,whereby' rotation of the upper disk alone cannot be made to unlock thelower, substantially as hereinafter more fully described.

In the drawings, Figure 1 is a top view of the lid and fixed ring or topof the ink-well, showing in dotted lines a curved groove on the underface of the upper disk, and a stoppin workin g in this groove risingfrom the lower disk. It also shows in full lines the holes in the upperdisk, and in dotted lines those in the lower disk, through which the penis passed to the ink when the top disk is rotated to bring these h'olesinto proper positions for the purpose, and into which also the key isinserted in locking or unlocking the lid.

Fig. 2 is an inverted view of the lid and the ring by which it issecured to the desk or well, showing a cross-bar or lugs fixed to thelower disk dropped through notches in the rin g and turned to bind thelid in place. Fig. 3 is a transverse vertical section of the ink well,the fixed ring, and the removable lid, showing the several stop-pins.Fig. 4 is a fraglnent of the ring, showing one of the notches therein,and the inclined ledge upon which an end of the cross-bar is turned tobind the lid.

Fig. 5 is an elevation of the key by which the lid is locked orunlocked.

When my invention is applied to a desk the well Wis set into a recessformed in the desktop T, and the metal ring A is secured to the marginof the recess. The ring may serve to hold the ink-vessel in place, asshown in Fig. 3, or its opening may be large enough to permit thepassage of the vessel through it.

In a detached inkstand the ring A may be a part of the stand itself. Onopposite sides of the ring A are two notches, n n, and at the side ofeach notchis the inclined Way t'. The projecting ends of the cross-barE, 0r equivalent lugs, solid with the disk B, drop down through thenotches n, and, by being turned against the inclined surfaces t', serveto draw the disk B closely down to bear by a marginal liange orotherwise upon the ring A, so that it will be firmly secured untilreleased by reversing the movement of the lugs E. In itself this isknownto be a common device for fastening a stopper of any kind in place.

The upper disk, C, is centrally pivoted to the lower disk, B, by the pinI, permitting the former to rotate freely upon the latter. The upperdisk is provided with apertures D D, and the lower with correspondingand correspondingly-located holes, D', so that by the rotation of C uponB two passages, form ed of the coincident apertures, may be opened tothe well W and closed at will.

In order that the apertures D may be posiA tively arrested over Dwithout special pains or care, a stop device is provided, as follows: Gris a curved groove in the under face of the upper disk, concentrictherewith, and P is a fixed pin rising from the lower disk, B, andworking in the groove G. It is provided that the disk C shall rotate inthe same direction to bring the holes D over holes D that the lugs E arerotated to bind upon the incline to fasten the lower disk to the ring A.

In Fig. 1 this direction is shown to be to the right. The holes D ofdisk C are arrested in proper position by the pin P, which is adj ustedto strike the end g of the groove Gr when the two sets of holes thuscoincide.

Any efort to further turn the upper disk will operate upon the lowerdisk, and therefore upon the lugs E, in the same directionthat is, tostill more tightly bind the lid to the ring A.

The passages into the well are closed by rotation ofthe upper disk inthe opposite direction. If the piu I were allowed to strike the oppositeend of the slot G the lower disk could be easily disengaged and removed.To prevent this the stop-pin S is fixed to the ring A, and the lug Lupon the upper disk is placed to strike S before 1 reaches the end ofthe slot G.

To unlock the lid the Spanner-key (shown in Fig. 5) is provided. Thepins p p are spaced to enter the holes I) 1) when the latter are broughtto coincide, and thus to bear upon the lower disk, so as to rotate thelugs E back to the notches n and permit the cover to be removed. Inbringing I) and 1) into coincidence the lug L is carried back to theposition marked a, and in then rotating both disks to disengage the lugsthrough the notches n the lug L is carried to, say, the point marked b.

Obviously, the parts must be so constructed and arranged that this lugwill not require to be carried beyond the pin Sin bringing the lugs E tothe notches n.

It is, of course, immaterial which disk has the groove G and which thepin P, or in which direction the disks rotate to disen gage, but onlythat the relative arrangement of the parts described he maintained.

Havingthus described myinvention, I claim and desire to secure byLetters Patent- The double-disk apertured lid provided with locking-lugsand covered groove G, stop-pin I), and stop L, combined with the ring Aand stop S, whereby the rotation of the upper disk in one direction isarrested independently of the lower disk, for the purpose set forth.

In testimony that I claim the foregoing as my invention I afiix mysignature in presence of two witnesses.

JOHN M. MOTT.

Witnesses:

M. E. DAYTON, I. ELBoo ROY.

